William reilly



(No Model() W. REILLY & o, HAIGH.' TWG SPEED DRIVING GEAR- FOR BIGYOLBS.

Patented Aug'. 24, 1897.

INV-ENTORS. www

WlTN ESSES.

I UNITED 'STATES ,PATENT OFFICE.

ENGLAND. l

TWO-SPEED DRIVING-GEAR FOR BlCYCjLES.

sPEcIrIcATmN'frming part of Letters Patent No. 588,657, dated Auguste@1897. ppnaion filed ncm'ber 29,1896. serial Naeiaz. (No mods.)

To @ZZ whom t may `concern/ff v Beit known thatvwe, WILLIAM REILLY,residing at Salford, and CHARLTON HAIGH, residing atChorlton-on-the-Medlock, Manchester, inthe county of Lancaster, England,subjects of the Queen of Great Britain, have invented certain new anduseful Improvements in Two-Speed Driving-Gear for Bicycles and otherVehicles, of which thev following isy a speciiication.

This invention relates to driving-gear for bicycles and other vehiclesin which epicyclic gearing is employed to change from one speed toanother While in motion. In order to change the speed, it is necessaryto disengage or disconnect the internvalwheel or pinion from one part ofthe mechanism and connect it toor engage it with another part of themechanism. Various arrangements and devices have hitherto beendesignedvfor this purpose; but these We consider clumsy, complicated,and expensive and not Well adapted for the purpose.

Our invention is designed to provide a sim-` ple and effective mechanismfor throwing into and out of gear the operative parts of the ap paratusand also to improve the construction of the Wheel-hub, so as to reducethe number of parts thereof.

It consists, essentially-in the combination,`

with epicyclic driving-gear comprising internally toothed sprocket;lWheel gearing with.

one, two, or more pinions around a central pinion on the Wheel axle orspindle, of a movable j slide formed with teeth or projections capableof being moved to and fro on the spindle to connect or lock the centralspindle with the hub when in one position and with the xed spindle Whenin the reverse position.

The gearing is constructed With a sprocket or driving Wheel A, providedwith internal teeth a, which gear'with one, two, or more, preferablyfour, small pinions B. The pinions B rotate on studs b, attached to theend o of the hubV C, and gear with a pinion D, which rotates looselyfonthe spindle E. At the driving end thehub C is formed with a shoulder orenlargement c, and in thisshoulder We form, by cutting or otherwise,slots or recesses c to receive the pinion-Wheels B. The slots c' are cutright through at intervals, so that when the Wheels B are placed thereinVILLIAM REILLY', OF SALFORD, AND CHARLTON HAIGH, OF MANCHESTER,

they extendloutward to engageA the internal teeth a of the Wheel A andinward to engage the pinion D on the Wheellspifndle E. Other holes b aredrilled or bored and studs b passed tudinal section; Fig. 8, transversesection ony line Qc Qc,- Fig. 2 Fig. 4, transverse 'section on line yy,xEig. 2; lFig. 5, side elevation of the movable slide with actuatingdevice; Fig. 6,

end elevationfof same Fig. 7, modification of the slides Mand K.

The centralpinion D is placeduponvthe axle E and is free to rotatethereon, but has lno longitudinal movement. On the axle El lwe alsoplace a slide or sleeve K, capable of being slid or moved to and frothereon, tted or provided internally with teeth lo and exl The spindleEis pro-,l c. vided With a'iixed pinion e, either formed as ternallywith teeth k.

part of the shaft or keyed to it, Withfteeth corresponding totheinternal teeth lo of the slide K, with which these teeth can gear and`over which the slide K moves.

The hub() is provided with internal teeth' or projections70',1With'which the external teeth k of the slide TK can engage orlock.: .The internal teethk of the slide K are always in gear With therotatable pinion D, so thatY when the slide K is moved in one directionit connects or locks the pinion D by means of the external teethy 7cand, the Vhub-teeth k with the hub C, and when moved in the reversedirection it is connectedor locked with the axle E by means of theinternalteeth k and the xed pinion e.

At one end of the hub C We arrange the cone L, that supports thebearing-balls H, capable of rotating, but Without any longitudinalmovement, upon the axle E. The inner end Z of this cone We elongate toany desired distance to carry a quick-pitch screw Z', and on the innerend of the sleeve thus formed IOO on the cone we cut a screw-thread,prefer-I ably square, say of about seven-eighths pitch l and providedwith about seven separate threads. The exact length of pitch and numberof threads may of course be varied or aladjusted by the nut I.

An intermediate slide M, which cannot rotate, is interposed between theend of the cone L and the slide K. The end m of the slide M is providedwith internal screw-threads.

wheel A provided with internal teeth plancorresponding with those on theend of the cone-sleeve L and the Iother end, m', with a flange to engagewith and draw back thel -pinion D on the axle E in combination withslide K.

Instead of connecting the slide M 4and the toothed sleeve K direct, asshown in Fig. l., Q the sleeve `K may be made .sufficiently long y toallow of a spring R being interposed, as i gage with the pinions D and-eto lock the pin- `At the outer end of the cone L is attached a plate orlever N of any convenient shape, to which a rod or the like is attachedfor the purpose of varying the speed of driving subshown in Fig. 7.

purpose .of rotating it. At present we consider that the angularmovement of the cone 1 should be about one-fourth revolution.

In operation when lthe sleeve K is in the position shown :and the pinionD locked to V the spindle by reason of being in gear with t the fixedpinion e the speed of the hub is rel tarded and power is gained indriving more slowly. When a normal or quick speed is` required, thesleeve K is moved by means of i the lever N and cone-sleeve Luntil thefexteri nal teeth gear with the teeth 7c.of the hub C, thereby lockingthe pinion D with the hub C, so that the hub then rotates at thesamespeed l sleeve K provided with quick screw-threads as the driving orsprocket wheel A.

XVe wish it to be clearly .understood that no claim Vis made for theepicyclic .gearing and with the sleeve K at the other and the leper se.

Whatwe claim as our invention., and desire tially as described.

to protect by Letters Patent, is

1. The combination with epicyclic drivingteeth, a stationary axle with afixed pinion thereon and a sliding .sleeve with bothexternal `andinternal teeth which slides to and fro 1 on the axle and alternatelylocks the central pinion with the fixed pinion to retard the speed `andwith the teeth projecting from the interior of the hub.

2. In epicyclic driving-gear for cycles and other vehicles thecombination with the central pinion and with the hub provided withinternal teeth of a sliding ,sleeve gearing therewith provided with bothinternal and external teeth by which the central pinion can bealternately locked with a xed part of the cycle or with a rotating partto vary the speed substantially as described.

3. An epicyclic driving-gear for cycles and other vehicles comprisingasprocket drivingetary pinions B rotating on studs b affixed to the endof the hub C and central rotating the hub C provided withinternally-projecting teeth c the axle E and fixed pinion e and thesleeve K capable of sliding to and fro on the axle fitted internallywith teeth which envion D to the axle and fitted externally with teethwhich engage with the teeth 7c" of the hub C to lock the pinion D to thehub for the stantially as described.

4. rThe combination of epicyclic driving- :gear for the wheels of cyclesand other vehicles ofthe hub C provided with internallyprojecting yteeth7c the stationary axle E` the intermediate connecting-sleeve M whichengages with the screw of the `cone at one end ver N by which lthe coneis rotated substan- In testimony whereof we have signed 4our names tothis specification in the presence of two subscribing witnesses.

WILLIAM REILLY. CHARLTON IIAIGII. Witnesses:

J. OwDnN OBRIEN, HARRY BARNFATHER.

